Which has better refractory performance, fused magnesia sand or fused silica sand

Generally speaking, the refractory performance of fused magnesia is better than that of fused magnesia, because fused magnesia is made by melting high-purity magnesia in an electric arc furnace, with higher purity and crystallinity, and has better refractory performance.

The main characteristics of fused magnesia include high high-temperature strength, good slag resistance, and good thermal shock resistance, which make it widely used in refractory materials. Electric melting skin sand is a layer of skin formed on the surface during the process of melting magnesium sand, and its purity and fire resistance are relatively low.

However, the specific fire resistance performance is also affected by various factors, such as the composition, particle size, and preparation process of the material. In practical applications, suitable refractory materials need to be selected based on specific usage conditions and requirements.

The differences in preparation processes between fused magnesia sand and fused silica sand are mainly reflected in the following aspects:

Raw materials: fused magnesia sand made from magnesium oxide pellets as raw materials; Electric melting skin sand is made from electric melting magnesia sand as raw material.

Equipment: Electric melting magnesium sand is prepared by electric arc furnace melting method, and electric melting skin sand is prepared by electric arc furnace melting method.

The production process of fused magnesia sand is short and simple, but the equipment investment and resource consumption are high. The production process of electric melting skin sand is similar to that of electric melting magnesia sand, but it requires the preparation of electric melting magnesia sand as raw material first.